Question

Determine the check digit for the UPC number 61330732461d. Recall the check digit is chosen so that the calculation below has 0 for the final digit when a through 4, are the first 11 digits of the UPC and d is the check digit.

Answer 1

Answer:

d=0

Step-by-step explanation:

61330732461d needs the ones digit to equal zero

3a1+ a2+3a3+a4+3a5+a6+3a7+a8+3a9+a10 +3a11 +d

3(6)+ 1+3(3)+3+3(0)+7+3(3)+2+3(4)+6 +3(1) +d

18 +1+9+3+0+7+9+2+12+6+3+d

70+d

The final digit needs to equal 0

d must be 0